Atmospheric pressure cationic dyeable polyester and its production method and use

A cationic dye and production method technology, which are applied to the normal pressure cationic dye-dyeable polyester and its production and application fields to achieve the effects of high melting point, good heat resistance and good spinnability

Inactive Publication Date: 2011-12-14
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, currently used polyester catalysts contain more or less heavy metals and toxic elements that are h

Method used

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  • Atmospheric pressure cationic dyeable polyester and its production method and use

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Add 15000g of DMT (dimethyl terephthalate) and 8600g of EG (ethylene glycol) into the esterification kettle, then add 415g of dimethyl isophthalate (AD2100) containing sulfonic acid groups, and then add Dimethyl adipate 150g, and catalyst titanium compound PC-502.5g, and catalyst magnesium acetate 90g, while adding catalyst basic lithium acetate 150g, stirring and heating up to 240 degrees within 4 hours; According to the judgment, when the esterification reaction rate reaches more than 97%, the prepared BHT oligomer is moved into the polymerization kettle; at room temperature, the phosphorus stabilizer trimethyl phosphate is first added, and then the matting agent titanium dioxide is added; subsequently, the decompression is carried out Raise the temperature and carry out polymerization by conventional polyester polycondensation method to obtain a cationic dyeable copolymer under normal pressure.

[0039]The intrinsic viscosity of the obtained polyester is 0.67, the co...

Embodiment 2

[0050] On the basis of embodiment 1, the addition of dimethyl adipate is controlled so that the content of aliphatic dibasic acid groups is 6%; specifically as shown in table 1, the resistance of copolyesters within the scope of the present invention It has good heat resistance, no broken filaments will occur during the spinning process, and its fiber fabric has good dyeability.

Embodiment 3

[0052] On the basis of Example 1, the addition amount of dimethyl adipate was controlled so that the content of aliphatic dibasic acid groups was 10%; details are shown in Table 1.

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Abstract

The invention discloses a normal-pressure cationic dye-dyeable polyester and its production method and application. The polyester is composed of dimethyl terephthalate, ethylene glycol, aliphatic dibasic acid or its derivatives and Dimethyl isophthalate with salt group is copolymerized under the catalysis of soluble titanium compounds; relative to the weight of polyester, the content of sulfur in polyester is 300-11000ppm, and the aliphatic dibasic acid group The content of the soluble titanium element is 0.1-10wt%, the content of the soluble titanium element is 1-1000ppm, and the content of the antimony element is less than 3ppm; the content of the basic compound in the polyester is 10-5000ppm; the present invention uses a non-toxic and environment-friendly titanium compound As a catalyst, the obtained polyester has the characteristics of high melting point, high thermal stability, and good spinnability, and the fiber fabric made from it has good dyeability and dyeability under normal pressure.

Description

technical field [0001] The invention relates to a cationic dye-dyeable polyester under normal pressure, its production method and application. Background technique [0002] Polyester obtained by copolymerization of aromatic dibasic acid and aliphatic diol is widely used in resin, fiber, film and other fields. At present, people pay more and more attention to environmental protection and energy saving. In terms of fiber application, polyester that can be dyed with cationic dyes at normal pressure and low temperature has become a new demand. [0003] As some known copolyester polymers and copolyester fibers that can be dyed with cationic dyes at atmospheric pressure and at a temperature of 100 ° C or lower, the Chinese patent CN101298493 of Hyosung Corporation discloses that they can be dyed in the atmosphere Copolyester polymer dyed with cationic dye under pressure, method for its manufacture, and copolyester fiber obtained therefrom. Specifically, a copolyester polymer is ...

Claims

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Application Information

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IPC IPC(8): C08G63/688C08G63/85D01F6/84
Inventor 柏立军杨娟望月克彦
Owner TORAY IND INC
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